Answer:
B. They required fewer people to operate.
Answer:
the stopping distance is greater than the free length of the track, the vehicle leaves the track before it can brake
Explanation:
This problem can be solved using the kinematics relations, let's start by finding the final velocity of the acceleration period
v² = v₀² + 2 a₁ x
indicate that the initial velocity is zero
v² = 2 a₁ x
let's calculate
v =
v = 143.666 m / s
now for the second interval let's find the distance it takes to stop
v₂² = v² - 2 a₂ x₂
in this part the final velocity is zero (v₂ = 0)
0 = v² - 2 a₂ x₂
x₂ = v² / 2a₂
let's calculate
x₂ =
x₂ = 573 m
as the stopping distance is greater than the free length of the track, the vehicle leaves the track before it can brake
Distance and displacement are hardly ever equal.
Remember that 'displacement' is the straight-line distance between
the start-point and the end-point, regardless of what path you followed
on the way.
So they're equal ONLY when the trip from start to finish was completely
in a straight line.
Answer: a) Believing your talents, abilities, and intelligence can be developed in different ways.
Explanation:
In order to develop a growth mindset, a person must be constantly willing to learn and diversify his/her learning. Learning is not all about going to school and graduating with a degree. Learning has to do with having personal development plan and following it strictly. This is the only way we can develop a growth mindset. We all have talents, we are all intelligent and we all possesses different abilities. One thing is to possess all this things, another thing is putting them into use through constant and unending learning. Through this conscious effort, we can develop a growth mindset instead of a fixed mindset.
Answer:
Explanation:
Given
Rocket attain a velocity of in a time period of
It was brought jarringly back to rest in only
Acceleration is the change in velocity of the object over a period of time
(a) Acceleration in his direction of motion
(b) acceleration opposite to his direction of motion i.e. deceleration is